<html>
    <body>
        <script type="text/javascript">
            var arr = new Array(3);
            arr[0] = "George";
            arr[1] = "John";
            arr[2] = "Thomas";
            document.write(arr.join());
            document.write("<br />");
            document.write(arr.join("."));
        </script>
    </body>
</html>